144855649 has 4 divisors (see below), whose sum is σ = 144940036. Its totient is φ = 144771264.

The previous prime is 144855647. The next prime is 144855661. The reversal of 144855649 is 946558441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38353249 + 106502400 = 6193^2 + 10320^2 .

It is a cyclic number.

It is not a de Polignac number, because 144855649 - 2¹ = 144855647 is a prime.

It is a super-2 number, since 2×144855649² = 41966318094422402, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144855599 and 144855608.

It is not an unprimeable number, because it can be changed into a prime (144855647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39564 + ... + 43069.

It is an arithmetic number, because the mean of its divisors is an integer number (36235009).

Almost surely, 2^144855649 is an apocalyptic number.

It is an amenable number.

144855649 is a deficient number, since it is larger than the sum of its proper divisors (84387).

144855649 is an equidigital number, since it uses as much as digits as its factorization.

144855649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84386.

The product of its digits is 691200, while the sum is 46.

The square root of 144855649 is about 12035.5992372628. The cubic root of 144855649 is about 525.1843935809.

The spelling of 144855649 in words is "one hundred forty-four million, eight hundred fifty-five thousand, six hundred forty-nine".